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83 changes: 83 additions & 0 deletions
83
...org/optaplanner/examples/rocktour/domain/solver/RockShowDateUpdatingVariableListener.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| /* | ||
| * Copyright 2018 Red Hat, Inc. and/or its affiliates. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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|
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| package org.optaplanner.examples.rocktour.domain.solver; | ||
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| import java.time.LocalDate; | ||
| import java.util.Objects; | ||
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| import org.optaplanner.core.impl.domain.variable.listener.VariableListener; | ||
| import org.optaplanner.core.impl.score.director.ScoreDirector; | ||
| import org.optaplanner.examples.rocktour.domain.RockShow; | ||
| import org.optaplanner.examples.rocktour.domain.RockStandstill; | ||
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| public class RockShowDateUpdatingVariableListener implements VariableListener<RockShow> { | ||
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| @Override | ||
| public void beforeEntityAdded(ScoreDirector scoreDirector, RockShow show) { | ||
| // Do nothing | ||
| } | ||
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| @Override | ||
| public void afterEntityAdded(ScoreDirector scoreDirector, RockShow show) { | ||
| updateDate(scoreDirector, show); | ||
| } | ||
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| @Override | ||
| public void beforeVariableChanged(ScoreDirector scoreDirector, RockShow show) { | ||
| // Do nothing | ||
| } | ||
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| @Override | ||
| public void afterVariableChanged(ScoreDirector scoreDirector, RockShow show) { | ||
| updateDate(scoreDirector, show); | ||
| } | ||
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| @Override | ||
| public void beforeEntityRemoved(ScoreDirector scoreDirector, RockShow show) { | ||
| // Do nothing | ||
| } | ||
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| @Override | ||
| public void afterEntityRemoved(ScoreDirector scoreDirector, RockShow show) { | ||
| // Do nothing | ||
| } | ||
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| protected void updateDate(ScoreDirector scoreDirector, RockShow sourceShow) { | ||
| RockStandstill previousStandstill = sourceShow.getPreviousStandstill(); | ||
| LocalDate arrivalDate = calculateArrivalDate(sourceShow, | ||
| previousStandstill == null ? null : previousStandstill.getDepartureDate()); | ||
| RockShow shadowShow = sourceShow; | ||
| while (shadowShow != null && !Objects.equals(shadowShow.getDate(), arrivalDate)) { | ||
| scoreDirector.beforeVariableChanged(shadowShow, "date"); | ||
| shadowShow.setDate(arrivalDate); | ||
| scoreDirector.afterVariableChanged(shadowShow, "date"); | ||
| LocalDate previousDepartureDate = shadowShow.getDepartureDate(); | ||
| shadowShow = shadowShow.getNextShow(); | ||
| arrivalDate = calculateArrivalDate(shadowShow, previousDepartureDate); | ||
| } | ||
| } | ||
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| private LocalDate calculateArrivalDate(RockShow show, LocalDate previousDepartureDate) { | ||
| if (show == null || previousDepartureDate == null) { | ||
| return null; | ||
| } | ||
| LocalDate arrivalDate = previousDepartureDate.plusDays(1); | ||
| arrivalDate = show.getAvailableDateSet().ceiling(arrivalDate); | ||
| return arrivalDate; | ||
| } | ||
|
|
||
| } |
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